# Big Health funding: rounds and investors > Big Health has raised $125M across 7 rounds since 2014. Investors include Index Ventures, Octopus Ventures and 406 Ventures. Every round with its source. Source: https://millionrounds.com/company/big-health (Millionrounds; every figure on the page links to its filing or article) United Kingdom · [Funded startup](https://millionrounds.com/companies) # Who invested in *Big Health* 7 rounds we have observed, with the 13 investors named in them. Every figure came from a named source, and where the company reported a raise to the SEC itself, that is shown beside it. Biotech Healthcare Healthtech Mental Health Raised 8 months ago Funding summary Updated 26 Oct 2026 **$125M** raised across 7 rounds since 2014, from 7 sources **$3.3M** Series A **$12M** Round **$68M** Round **$7.1M** Round **$160K** Round **$10.0M** Round **$24M** Round - **Latest round:** Round, $24M Feb 2026 - **Led by:** 406 Ventures and AlleyCorp - **Biggest round:** $68M Round · Jan 2022 - **Step-up i:** 2.4× - **Investors:** 13 (2 led) See who backed them ## The funding story Each circle is a round, placed by date and sized by amount. The line above is the running total. 2014 2016 2018 2020 2022 2024 2026 **$3.3M** Series A **$12M** Round **$68M** Round **$7.1M** Round **$10.0M** Round **$24M** Round - **First round:** Series A, $3.3M - **Biggest round:** $68M - **Usual gap between rounds:** 2.3 years ## The rounds - **Feb 2026** Round **$24M** *10 new* *2 returning* [406 Ventures](https://millionrounds.com/fund/406-ventures) Lead [AlleyCorp](https://millionrounds.com/fund/alleycorp) Lead [Y Combinator](https://millionrounds.com/fund/y-combinator) [Index Ventures](https://millionrounds.com/fund/index-ventures) [Octopus Ventures](https://millionrounds.com/fund/octopus-ventures) [SoftBank](https://millionrounds.com/fund/softbank-2) [SoftBank Vision Fund](https://millionrounds.com/fund/softbank-investment-advisers) [Gilde Healthcare](https://millionrounds.com/fund/gilde-healthcare) [The Blue Venture Fund](https://millionrounds.com/fund/bluecross-blueshield-venture-partners) [CVS Health Ventures](https://millionrounds.com/fund/cvs-health-ventures) [Sandbox Clinical Ventures](https://millionrounds.com/fund/sandbox-clinical-ventures) [Supermoon Ventures](https://millionrounds.com/fund/supermoon-ventures) Reported by Gilde Healthcare - **Jul 2023** Round **$10.0M** No investor was named in the report. Shares issued, filed with Companies House (SH01); no report of this raise yet - **Sept 2022** Round **$160K** No investor was named in the report. Shares issued, filed with Companies House (SH01); no report of this raise yet - **Mar 2022** Round **$7.1M** No investor was named in the report. Shares issued, filed with Companies House (SH01); no report of this raise yet - **Jan 2022** Round **$68M** No investor was named in the report. Shares issued, filed with Companies House (SH01); no report of this raise yet - **Jul 2016** Round **$12M** *1 new* [Octopus Ventures](https://millionrounds.com/fund/octopus-ventures) Reported by FinSMEs - **Apr 2014** Series A **$3.3M** *2 new* [Index Ventures](https://millionrounds.com/fund/index-ventures) [Forward Partners](https://millionrounds.com/fund/forward-partners) From a historical funding record ## Funding filed with regulators Big Health filed 4 raises, $86M in all. Filings say how much was sold and to how many investors; they never name the investors. - Jul 2023 **$10.0M** UK share allotment - Sept 2022 **$160K** UK share allotment - Mar 2022 **$7.1M** UK share allotment - Jan 2022 **$68M** UK share allotment ## Who was in which round The busiest backers across the latest rounds. A filled square is a round they joined; a dark one, a round they led. **Series A** 2014 **Round** 2016 **Round** 2022 **Round** 2022 **Round** 2022 **Round** 2023 **Round** 2026 [Index Ventures](https://millionrounds.com/fund/index-ventures) [Octopus Ventures](https://millionrounds.com/fund/octopus-ventures) [406 Ventures](https://millionrounds.com/fund/406-ventures) L [AlleyCorp](https://millionrounds.com/fund/alleycorp) L [Y Combinator](https://millionrounds.com/fund/y-combinator) [SoftBank](https://millionrounds.com/fund/softbank-2) [SoftBank Vision Fund](https://millionrounds.com/fund/softbank-investment-advisers) [Gilde Healthcare](https://millionrounds.com/fund/gilde-healthcare) [The Blue Venture Fund](https://millionrounds.com/fund/bluecross-blueshield-venture-partners) [Forward Partners](https://millionrounds.com/fund/forward-partners) ## Everyone who backed them [Index Ventures](https://millionrounds.com/fund/index-ventures) VC firm **2** rounds [Octopus Ventures](https://millionrounds.com/fund/octopus-ventures) VC firm **2** rounds [406 Ventures](https://millionrounds.com/fund/406-ventures) VC firm **1** round, led 1 [AlleyCorp](https://millionrounds.com/fund/alleycorp) Venture studio **1** round, led 1 [Y Combinator](https://millionrounds.com/fund/y-combinator) Accelerator **1** round [SoftBank](https://millionrounds.com/fund/softbank-2) Investment firm **1** round [SoftBank Vision Fund](https://millionrounds.com/fund/softbank-investment-advisers) VC firm **1** round [Gilde Healthcare](https://millionrounds.com/fund/gilde-healthcare) Private equity **1** round [The Blue Venture Fund](https://millionrounds.com/fund/bluecross-blueshield-venture-partners) Corporate VC **1** round [Forward Partners](https://millionrounds.com/fund/forward-partners) VC firm **1** round [CVS Health Ventures](https://millionrounds.com/fund/cvs-health-ventures) VC firm **1** round [Sandbox Clinical Ventures](https://millionrounds.com/fund/sandbox-clinical-ventures) VC firm **1** round [Supermoon Ventures](https://millionrounds.com/fund/supermoon-ventures) VC firm **1** round Missing a round, or an investor who was in one? [Tell us](https://millionrounds.com/corrections?slug=big-health). ## Also claim to have backed them These 5 firms list Big Health as a portfolio company on their own websites, but no report of a round names them. They are the firms' own claims, kept apart from the rounds above. [Samsung Next](https://millionrounds.com/fund/samsung-next) Corporate VC Per its own site [Kaiser Permanente Ventures](https://millionrounds.com/fund/kaiser-permanente-ventures) Corporate VC Per its own site [515 Ventures](https://millionrounds.com/fund/515-ventures) VC firm Per its own site [Innovation Global Capital](https://millionrounds.com/fund/innovation-global-capital) VC firm Per its own site [Supermoon Capital](https://millionrounds.com/fund/supermoon-capital) VC firm Per its own site ## Quick answers about Big Health ### Who invested in Big Health? Big Health's investors include Index Ventures, Octopus Ventures, 406 Ventures, AlleyCorp and Y Combinator, and 8 more on record. 406 Ventures led its latest round. ### How much has Big Health raised? Big Health has raised $125M across 7 rounds since 2014. ### When did Big Health last raise? Big Health's most recent round was an Undisclosed round of $24M in Feb 2026, led by 406 Ventures. ### What was Big Health's biggest round? Big Health's largest round on record is $68M, in Jan 2022. ### Who backed Big Health first? Big Health's first round on record, in Apr 2014, was backed by Index Ventures and Forward Partners. ### What stage is Big Health at? Big Health's latest named round is an Undisclosed round, in Feb 2026. ### Where is Big Health based? Big Health is based in the United Kingdom. ### Who led Big Health's rounds? 406 Ventures led the Undisclosed round in 2026. ## Companies like Big Health In the same sector, and raised in the last eighteen months. [**Coherence Neuro** $55M · Oct 2026](https://millionrounds.com/company/coherence-neuro)[**HydRegen** $12M · Oct 2026](https://millionrounds.com/company/hydregen)[**XRlabs** $8.4M · Oct 2026](https://millionrounds.com/company/xrlabs)[**Respiratory Analytics** $2.8M · Oct 2026](https://millionrounds.com/company/respiratory-analytics)[**OMass Therapeutics** $442M · Oct 2026](https://millionrounds.com/company/omass-therapeutics)[**CMR Surgical** $1.1B · Oct 2026](https://millionrounds.com/company/cmr-surgical) ## Find investors like these Search every investor by what they have actually funded, then narrow to your stage and market. Free. Open the investor searchOr these rounds in the app